Here is a diamond dust anodized Line SI post 1990 Bushmaster. This body style was typically used on sponsored team Bushmasters but quite a few have been popping up over the last year which makes me think it was probably sold as a finish players could order.
This example came off eBay a few weeks back and I bought mostly as parts since it was described as being in rough shape and missing parts. Looking it over the pump / bolt is completely stuck in place.
Oddly enough, the front half of the bolt is missing and only the back stainless portion is what’s stuck. I’ll probably hammer it out with a barrel swab eventually. I think this Bushmaster will eventually be getting a sliding stock. In the video I explain the different between pre 1990 and post 1990 Bushmaster being the outer diameter length of the valve body and the 2 side valve retaining screws.
Here is a better shot of the body of this Bushmaster. It looks nearly new aside from some black gunk staining it. I’m thinking that someone upgraded a classic Bushmaster with the 1990 body style but then stopped using afterwards.
The sight rail for this Bushmaster is also the incorrect stock length. It should come right up to the back valve body screw which makes me think it was for sure switched out with an earlier body. The barrel has been removed in this photo.
Find Line SI Bushmaster parts at http://www.baccipaintball.com/parts/pump/nelson/brand/line-si.html
And find Line SI articles on baccipaintball at https://paintballhistory.com/tag/line-si